The fourth prince, Chu Jingqi, has changed his temperament greatly for some reason, and he is no longer close to women, but only keeps the memories of his childhood sweetheart. The emperor arranged for him to investigate the case to distract himself, but unexpectedly found that a girl behaved like his childhood sweetheart. Chu Jingqi observed quietly, and gradually confirmed that the girl might have a fake identity. He decided to pay attention to her silently, while Meng Xinran secretly peeked at him.